CN109709723A - Light guide plate, backlight module and display panel - Google Patents
Light guide plate, backlight module and display panel Download PDFInfo
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- CN109709723A CN109709723A CN201910199675.6A CN201910199675A CN109709723A CN 109709723 A CN109709723 A CN 109709723A CN 201910199675 A CN201910199675 A CN 201910199675A CN 109709723 A CN109709723 A CN 109709723A
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Abstract
The present invention provides a kind of light guide plate, backlight module and display panel.Light guide plate includes multiple optical waveguide layers, multiple optical waveguide layers are cascading along preset direction, the refractive index of multiple optical waveguide layers is both greater than air refraction, and at least there are two the refractive index of optical waveguide layer differences in multiple optical waveguide layers, so that light reflects between optical waveguide layer, increase light light path in light guide plate, effectively improve colour cast problem of the light guide plate at sidelight source position, and the light of incidence angles degree and the light of different wave length have roughly the same light path, all light is spread uniformly in light guide plate, and the light being finally emitted is more evenly.
Description
Technical field
The present invention relates to field of display technology, in particular to a kind of light guide plate, further relate to include the light guide plate back
Optical mode group and display panel.
Background technique
In field of liquid crystal display, the display effect and backlight source module structure of liquid crystal display are there are much relations, therefore backlight
Modular structure optimization design is particularly important.Light guide plate is the key element of backlight module, for linear light source to be changed into area source
And shine uniformly, it is essential component part in display panel.For side incident backlight mould group, be easy to appear uniformity and
Colour cast problem.
It should be noted that the information in the invention of above-mentioned background technology part is only used for reinforcing the reason to background of the invention
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The purpose of the present invention is to provide a kind of light guide plate, backlight module and display panels, solve existing light guide plate and go out light
The problem of uneven and colour cast.
According to an aspect of the present invention, a kind of light guide plate is provided, comprising:
Multiple optical waveguide layers, the multiple optical waveguide layer are cascading along preset direction, the refraction of the multiple optical waveguide layer
Rate is both greater than air refraction, and at least there are two the refractive index of optical waveguide layer differences in the multiple optical waveguide layer.
In a kind of exemplary embodiment of the invention, the refractive index of the multiple optical waveguide layer is incremented by along the preset direction
Or successively decrease；Or,
The quantity of the optical waveguide layer is at least three, and including benchmark optical waveguide layer, remaining described optical waveguide layer is distributed in described
The two sides of benchmark optical waveguide layer, positioned at benchmark optical waveguide layer the same side each optical waveguide layer refractive index to far from the benchmark
Successively decrease or be incremented by the direction of optical waveguide layer；When being incremented by, the refractive index of the benchmark optical waveguide layer is less than the refraction of remaining optical waveguide layer
Rate, when successively decreasing, the refractive index of the benchmark optical waveguide layer is greater than the refractive index of remaining optical waveguide layer.
3, the light guide plate according to above-mentioned any one, positioned at the quantity phase of the optical waveguide layer of benchmark optical waveguide layer two sides
Together, the refractive index of two optical waveguide layers and positioned at benchmark optical waveguide layer two sides symmetric position is equal.
In a kind of exemplary embodiment of the invention, the refractive index difference absolute value of two adjacent optical waveguide layers is not
Greater than 0.3.
In a kind of exemplary embodiment of the invention, the material of each optical waveguide layer includes optical material, refractive index
The optical material of the different optical waveguide layers is identical, and the different optical waveguide layer of refractive index further includes light diffusing agent, refractive index
Light diffusing agent content in different different optical waveguide layers is different；Or
The material of each optical waveguide layer includes optical material, and the optical material of the different optical waveguide layer of refractive index is not
Together.
In a kind of exemplary embodiment of the invention, the optical material be polymethyl methacrylate, polycarbonate,
Polystyrylmethyl methyl acrylate or thermoplastic resin, the light diffusing agent are titanium dioxide, in tantalum pentoxide, zinc oxide
It is one or more.
In a kind of exemplary embodiment of the invention, the light guide plate further include:
Light directing site is set to the lateral surface of an optical waveguide layer on the outermost side in the multiple optical waveguide layer；
Diffraction grating is set to the lateral surface of an outermost optical waveguide layer in the multiple optical waveguide layer, and described spreads out
It penetrates grating and the light directing site is located at different optical waveguide layers.
In a kind of exemplary embodiment of the invention, the optical grating construction includes multiple first grating fringes and multiple
Two grating fringes, the multiple first grating fringe is parallel to each other, and extends in a first direction, the multiple second gratings strips
Line is parallel to each other, and extends in a second direction, the first direction and second direction difference, and the multiple first gratings strips
Line intersects with the multiple second grating fringe.
According to another aspect of the present invention, a kind of backlight module is provided, comprising:
Light guide plate described in above-mentioned any one.
According to a further aspect of the invention, a kind of display panel is provided, including backlight mould described in above-mentioned any one
Group.
Light guide plate of the invention is multilayered structure, and the refractive index of multiple optical waveguide layers is both greater than air refraction, and multiple is led
It is different that at least there are two the refractive index of optical waveguide layer in photosphere, so that light reflects between optical waveguide layer, optical path occurs inclined
Turn, compared with straightline propagation, increase light light path in light guide plate, on the one hand, so that being located at light color at sidelight source position
It dissipates and reduces, effectively improve colour cast problem of the light guide plate at sidelight source position；On the other hand, the light of incidence angles degree
The light of line and different wave length has roughly the same light path, to make different angle incident light and different wave length light in light guide plate
Uniformly, the light being finally emitted is more evenly for middle diffusion.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.It should be evident that the accompanying drawings in the following description is only the present invention
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of light guide plate of the invention；
Fig. 2 is the first structure of light guide plate of the invention and light path schematic diagram；
Fig. 3 is second of structure of light guide plate and light path schematic diagram of the invention；
Fig. 4 is the third structure of light guide plate of the invention and light path schematic diagram；
Fig. 5 is light guide plate of the invention 4th kind of structure and light path schematic diagram；
Fig. 6 is the structural schematic diagram of light guide plate of the invention with diffraction grating；
Fig. 7 is the structural schematic diagram of diffraction grating；
Fig. 8 is the structural schematic diagram of backlight module of the invention.
1, light guide plate in figure；2, optical waveguide layer；3, light directing site；4, diffraction grating；5, side light source；6, reflecting plate；7, optics
Diaphragm；21, benchmark optical waveguide layer.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
In the related technology, light guide plate is single layer structure, and refractive index is a fixed value, for the backlight module of side light source,
It after white light injects light guide plate from light guide plate side, is propagated in light guide plate along straight line, light path is shorter, close to side light source
At position, when beam projecting of different wave length, is easy to happen dispersion, leads to the problem of colour cast occurs, such as by the position of close to sources
It turns blue, the position far from light source is turned to be yellow.
As shown in Figure 1, a kind of light guide plate 1 of embodiment of the present invention, including multiple optical waveguide layers 2, multiple optical waveguide layers 2 are along pre-
Set direction is cascading, and the refractive index of multiple optical waveguide layers 2 is both greater than air refraction, and in multiple optical waveguide layers 2 at least
The refractive index of two optical waveguide layers is different.
Light guide plate 1 of the invention is suitable for side light source being converted to area source, and light injects light guide plate by end side, due to
The specific refractivity of light guide panel material and air layer, upper and lower surface of the light due to total reflection principle in light guide plate 1 are iteratively produced
Mirror-reflection is pushed ahead simultaneously.Random scatter occurs when light encounters the light directing site 3 that 1 lower surface of light guide plate is arranged in,
Then it is projected from the upper surface of light guide plate 1, becomes the area source of illuminance distribution.
In the present invention, since the refractive index of multiple optical waveguide layers 2 of light guide plate is different, light occurs between optical waveguide layer 2
Refraction, makes optical path deflect, compared with straightline propagation, increases light path of the light in light guide plate 1, so that being located at side light source
Light dispersion is reduced at position, effectively improves colour cast problem of the light guide plate 1 at sidelight source position.On the other hand, no
There is roughly the same light path with the light of incident angle and the light of different wave length, to make different angle incident light and different waves
Long light is spread uniformly in light guide plate 1, and the light being finally emitted is more evenly.
The light guide plate of embodiment of the present invention is described in detail below:
Multiple optical waveguide layers 2 of the present invention, including two optical waveguide layers 2 and more than two optical waveguide layers 2, can be even number
Layer, or odd-level.In multilayered structure, the purpose of variations in refractive index is to extend propagation road of the light in light guide plate
Line, i.e. light path.As long as at least there are two the refractive index differences of optical waveguide layer 2 can change light propagation path.It therefore, can be only
Some 2 refractive index of optical waveguide layer is different, and 2 refractive index of optical waveguide layer that can also be all is different.In addition, refractive index can be according to
Certain rule is changed, and can also be arbitrarily changed.No matter how refractive index changes, adjacent positioned at outermost and air
Optical waveguide layer 2 requires to meet total reflection condition.It should be noted that the refractive index of each optical waveguide layer 2 is fixed and invariable.
Since light guide plate of the invention is multilayered structure, light directing site 2 is set in multiple optical waveguide layers positioned at outermost
The lateral surface of one optical waveguide layer 2 of side, i.e., 2 bottom surface of lowest level optical waveguide layer as shown in fig. 1.The production of light directing site can be printing
Formula is also possible to non-printing formula.
Light guide plate global shape can be tabular, be also possible to other shapes.Correspondingly, the shape of optical waveguide layer 2 can also
To be tabular or other shapes.One can be pressed between optical waveguide layer 2 by way of hot pressing, optical cement can also be passed through
One is sticked into, for example, optical cement can be ultraviolet light adhesive etc..
In the first illustrative embodiments, the refractive index of multiple optical waveguide layers 2 is incremented by along preset direction.Reference Fig. 2, when
When preset direction is upward, the refractive index of optical waveguide layer 2 can be incremented by from the bottom to top.When preset direction is downward, optical waveguide layer 2
The variation of refractive index and upwards similarly.When being incremented by, the variation of refractive index can equidistantly change, and can also be become with any spacing
Change.When the structure, the quantity at least two of optical waveguide layer 2.When light enters light guide plate 1 by side, in 1 inside shape of light guide plate
At wavy line shape (solid line in figure) as shown in Figure 2, light path is greater than the light path (dotted line in figure) of linear light path, effectively extends
Incident light light path keeps the light path of the light of different wave length or different angle close, reduces the generation of dispersion.
In second of illustrative embodiments, the refractive index of multiple optical waveguide layers 2 is successively decreased along preset direction.Reference Fig. 3, when
When preset direction is upward, the refractive index of optical waveguide layer 2 can also successively decrease from the bottom to top.When preset direction is downward, optical waveguide layer 2
Refractive index variation and upwards similarly.When successively decreasing, the variation of refractive index can equidistantly change, and can also be become with any spacing
Change.When the structure, the quantity at least two of optical waveguide layer 2.When light enters light guide plate 1 by side, in 1 inside shape of light guide plate
At wavy line shape (solid line in figure) as shown in Figure 3, light path is greater than the light path (dotted line in figure) of linear light path, effectively extends
Incident light light path keeps the light path of the light of different wave length or different angle close, reduces the generation of dispersion.
In the third illustrative embodiments, the quantity of optical waveguide layer 2 is at least three, and including benchmark optical waveguide layer 21,
Remaining optical waveguide layer is distributed in the two sides of benchmark optical waveguide layer 21, positioned at 21 the same side of benchmark optical waveguide layer each optical waveguide layer refractive index to
Direction far from benchmark optical waveguide layer 21 is incremented by.Benchmark optical waveguide layer 21 herein refers to the smallest optical waveguide layer of refractive index, with the leaded light
On the basis of the position of layer, for facilitating the structure for describing other optical waveguide layers.The guide-lighting layer number of the two sides of benchmark optical waveguide layer 21 can
It, can also be unequal with equal, that is to say, that benchmark optical waveguide layer 21 can be located at the bosom of all optical waveguide layers, can also not
Positioned at bosom., can be incremental equidistantly to carry out when the optical waveguide layer refractive index of two sides is incremented by, it can also be passed with any spacing
Increase.For example, referring to Fig. 4, optical waveguide layer 2 shares five layers, and benchmark optical waveguide layer 21 is the optical waveguide layer in bosom, and refractive index is less than
Other any optical waveguide layers.About 21 two sides of benchmark optical waveguide layer are respectively distributed with two layers of optical waveguide layer, and the refractive index of upside optical waveguide layer by
Benchmark optical waveguide layer 21 incrementally increases upwards, and the refractive index of downside optical waveguide layer is also incrementally increased downwards by benchmark optical waveguide layer 21, entirely
The distribution big in intermediate small both sides of 1 inner refractive index of light guide plate.When light enters light guide plate 1 by side, inside light guide plate 1
It is formed wavy line shape as shown in Figure 4 (solid line in figure), light path is greater than the light path (dotted line in figure) of linear light path, effectively prolongs
Incident light light path has been grown, has kept the light path of the light of different wave length or different angle close, reduces the generation of dispersion.
In the 4th kind of illustrative embodiments, the quantity of optical waveguide layer 2 is at least three, and including benchmark optical waveguide layer 21,
Remaining optical waveguide layer is distributed in the two sides of benchmark optical waveguide layer 21, positioned at 21 the same side of benchmark optical waveguide layer each optical waveguide layer refractive index to
Successively decrease in direction far from benchmark optical waveguide layer 21.Benchmark optical waveguide layer 21 herein refers to the maximum optical waveguide layer of refractive index, with the leaded light
On the basis of the position of layer, for facilitating the structure for describing other optical waveguide layers.The guide-lighting layer number of the two sides of benchmark optical waveguide layer 21 can
It, can also be unequal with equal, that is to say, that benchmark optical waveguide layer 21 can be located at the bosom of all optical waveguide layers, can also not
Positioned at bosom.When the optical waveguide layer refractive index of two sides is successively decreased, it can also be passed with equidistantly successively decreasing with any spacing
Subtract.For example, referring to Fig. 5, optical waveguide layer 2 shares five layers, and benchmark optical waveguide layer 21 is the optical waveguide layer in bosom, and refractive index is greater than
Other four optical waveguide layers.About 21 two sides of benchmark optical waveguide layer are respectively distributed with two layers of optical waveguide layer, and the refractive index of upside optical waveguide layer by
Benchmark optical waveguide layer 21 gradually reduces upwards, and the refractive index of downside optical waveguide layer is also gradually reduced downwards by benchmark optical waveguide layer 21, entirely
1 inner refractive index of light guide plate is in the distribution of narrowing toward each end broad in the middle.When light enters light guide plate 1 by side, inside light guide plate 1
It is formed wavy line shape as shown in Figure 5 (solid line in figure), light path is greater than the light path of linear light path (dotted line in figure), effectively prolongs
Incident light light path has been grown, has kept the light path of the light of different wave length or different angle close, reduces the generation of dispersion.
In the third or the 4th kind of embodiment, the quantity positioned at the optical waveguide layer of 21 two sides of benchmark optical waveguide layer is identical, and
Refractive index positioned at two optical waveguide layers of 21 two sides symmetric position of benchmark optical waveguide layer is equal, i.e., the path of incident ray is closest sinusoidal
Curve can propagate longest light path inside light guide plate, can extend incidence angles degree and different wave length to the full extent
Light.
In other embodiments, the variation of the refractive index of optical waveguide layer 2 can also have other forms, for example, refractive index is most
Big or the smallest optical waveguide layer maximum or the smallest optical waveguide layer can not be located in all optical waveguide layers with not only one layer or refractive index
Heart, etc., it is different as long as at least there are two the refractive index of optical waveguide layer 2, and the satisfaction total reflection of outermost optical waveguide layer can extend light
Journey is realized uniform in light emission, be will not enumerate herein.
Since the refractive index between optical waveguide layer 2 is different, variations in refractive index is excessive in order to prevent, and light is in internal optical waveguide layer
Between total reflection occurs and the light directing site 3 of bottom optical waveguide layer can not be reached, influence beam projecting, therefore, refractive index is different
The refractive index difference absolute value of two optical waveguide layers 2 is not more than 0.3.
Optical waveguide layer 2 is mainly made of optical material, and different optical materials usually has different refractive index, therefore,
In exemplary embodiments of the present invention, the optical material of each optical waveguide layer 2 can be different, direct by different optical materials
The optical waveguide layer of different refractivity is formed, it at this time can be by will be made of different optical materials directly in a manner of hot pressing or gluing
Optical waveguide layer 2 is fixed as the overall structure of layered laminate.Optical material can be polymethyl methacrylate (PMMA), polycarbonate
(PC), polystyrylmethyl methyl acrylate (MS) or thermoplastic resin etc..All optical waveguide layers 2 can also use same leaded light
Material, at this time, it may be necessary to add appropriate light diffusing agent, in optical material to form the refractive index needed.Different optical waveguide layers 2 can be with
Change refractive index by adding the light diffusing agent of different amounts in same optical material.Light diffusing agent can be titanium dioxide
One of titanium, tantalum pentoxide, zinc oxide are a variety of, and optical material is added usually in the form of nano-powder.
In foregoing exemplary embodiment, the light guide plate 1 with multiple 2 structures of optical waveguide layer further includes diffraction grating 4, is spread out
The lateral surface that grating 4 is also disposed on an outermost optical waveguide layer in multiple optical waveguide layers is penetrated, but is located at different lead from light directing site 3
Photosphere.Specifically, diffraction grating 4 is set to another outermost optical waveguide layer opposite with the optical waveguide layer 2 where light directing site 3
2 lateral surface, i.e., the upper surface of top layer's optical waveguide layer 2 as shown in FIG. 6.The spacing of grating fringe 4 is respectively less than or is equal to incidence
Thus diffraction can just occur for optical wavelength.By optical grating construction diffraction and interference occur for light, can form brightness uniformity, distribution of color
Uniform emergent light.And according to diffraction principle, incident ray shooting angle after diffraction can change, to increase outgoing
The dispersion angle of light makes the emergent light of light guide plate 1 more evenly.
In this illustrative embodiments, diffraction grating 4 includes multiple first grating fringes 41 and multiple second gratings strips
Line 42, multiple first grating fringes 41 are parallel to each other, and extend in a first direction, and multiple second grating fringes 42 are mutually flat
Row, and extend in a second direction, first direction and second direction difference, and multiple first grating fringes 41 and multiple second light
Grizzly bar line 42 intersects.For example, as shown in fig. 7, multiple first grating fringes 41 and multiple second grating fringes 42 form net
The diffraction grating of trellis, no matter the first diffraction fringe or the second grating fringe 42, respective fringe spacing be respectively less than or be equal to
Thus just in different directions diffraction and interference can occur for lambda1-wavelength.Light, can be two sides when by the grating fringe
Diffraction and interference all occur upwards, can be formed brightness more evenly, the emergent light of distribution of color more evenly, shape can be cooperated with liquid crystal layer
It is shown at high colour gamut, the shooting angle of light has bigger variation, makes the emergent light of light guide plate more evenly.First diffraction fringe
It can be right angle with the angle of the second grating fringe 42, the diffraction of light and interference effect are best at this time, naturally it is also possible to be them
His angle.
Diffraction grating 4 can be by forming in 2 surface etch grating fringe of optical waveguide layer, and the mode of etching can be laser incising
Erosion, wet etching etc., the present invention do not carry out particular determination to this.
Embodiment of the present invention also provides a kind of backlight module, further includes sidelight as shown in figure 8, including above-mentioned light guide plate 1
Source 5, side light source 5 are located at any side of light guide plate 1 or so.Side light source 5 can only include one, be located at light guide plate 1 or so two
The wherein side of side also may include two, have one respectively at left and right sides of light guide plate.Except above structure, the backlight module is also
It may include the components such as reflector plate 6, optical film material 7.The backlight module can with well-off brightness and the light source being evenly distributed,
Display is set to show high quality image, it helps to improve display gamut range.
Embodiment of the present invention also provides a kind of display panel, including above-mentioned backlight module.The display panel can be used for
In the various LCD technologies such as computer, mobile phone, advertising lamp box, lamp ornaments lighting.
Although the term of relativity, such as "upper" "lower" is used to describe a component of icon for another in this specification
The relativeness of one component, but these terms are in this manual merely for convenient, for example, with reference to the accompanying drawings described in show
The direction of example.It is appreciated that, if making it turn upside down the device overturning of icon, the component described in "upper" will
As the component in "lower".When certain structure is at other structures "upper", it is possible to refer to that certain structural integrity is formed in other structures
On, or refer to that certain structure is " direct " and be arranged in other structures, or refer to that certain structure is arranged by the way that another structure is " indirect " in other knots
On structure.
Term "one", " one ", "the", " described " and "at least one" be to indicate that there are one or more elements/groups
At part/etc.；Term " comprising " and " having " is to indicate the open meaning being included and refer in addition to listing
Element/component part/also may be present except waiting other element/component part/etc..
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to of the invention its
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows general principle of the invention and including the undocumented common knowledge in the art of the present invention
Or conventional techniques.The description and examples are only to be considered as illustrative, and true scope and spirit of the invention are by appended
Claim is pointed out.
Claims (10)
1. a kind of light guide plate characterized by comprising
Multiple optical waveguide layers, the multiple optical waveguide layer are cascading along preset direction, and the refractive index of the multiple optical waveguide layer is all
It is different that greater than air refraction, and in the multiple optical waveguide layer, at least there are two the refractive index of optical waveguide layer.
2. light guide plate according to claim 1, which is characterized in that the refractive index of the multiple optical waveguide layer is along the default side
To increasing or decreasing；Or,
The quantity of the optical waveguide layer is at least three, and including benchmark optical waveguide layer, remaining described optical waveguide layer is distributed in the benchmark
The two sides of optical waveguide layer, the refractive index positioned at each optical waveguide layer of benchmark optical waveguide layer the same side are guide-lighting to the separate benchmark
Successively decrease or be incremented by the direction of layer；When being incremented by, the refractive index of the benchmark optical waveguide layer is less than the refractive index of remaining optical waveguide layer, passs
When subtracting, the refractive index of the benchmark optical waveguide layer is greater than the refractive index of remaining optical waveguide layer.
3. light guide plate according to claim 2, which is characterized in that positioned at the number of the optical waveguide layer of benchmark optical waveguide layer two sides
Measure it is identical, and be located at benchmark optical waveguide layer two sides symmetric position two optical waveguide layers refractive index it is equal.
4. light guide plate according to claim 1, which is characterized in that the refractive index difference of two adjacent optical waveguide layers is exhausted
0.3 is not more than to value.
5. light guide plate according to claim 1, which is characterized in that the material of each optical waveguide layer includes optical material,
The optical material of the different optical waveguide layer of refractive index is identical, and the different optical waveguide layer of refractive index further includes light diffusing agent,
Light diffusing agent content in the different different optical waveguide layers of refractive index is different；Or
The material of each optical waveguide layer includes optical material, and the optical material of the different optical waveguide layer of refractive index is different.
6. light guide plate according to claim 5, which is characterized in that the optical material is polymethyl methacrylate, gathers
Carbonic ester, polystyrylmethyl methyl acrylate or thermoplastic resin, the light diffusing agent be titanium dioxide, tantalum pentoxide,
One of zinc oxide is a variety of.
7. light guide plate according to claim 1, which is characterized in that the light guide plate further include:
Light directing site is set to the lateral surface of an optical waveguide layer on the outermost side in the multiple optical waveguide layer；
Diffraction grating is set to the lateral surface of an outermost optical waveguide layer in the multiple optical waveguide layer, and the diffraction light
Grid and the light directing site are located at different optical waveguide layers.
8. light guide plate according to claim 8, which is characterized in that the optical grating construction include multiple first grating fringes and
Multiple second grating fringes, the multiple first grating fringe is parallel to each other, and extends in a first direction, and the multiple second
Grating fringe is parallel to each other, and extends in a second direction, the first direction and second direction difference, and the multiple first
Grating fringe intersects with the multiple second grating fringe.
9. a kind of backlight module characterized by comprising
Light guide plate of any of claims 1-8.
10. a kind of display panel, which is characterized in that including backlight module as claimed in claim 9.
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| CN201910199675.6A CN109709723A (en) | 2019-03-15 | 2019-03-15 | Light guide plate, backlight module and display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114415422A (en) * | 2022-01-28 | 2022-04-29 | 广东粤港澳大湾区国家纳米科技创新研究院 | High-temperature-resistant quantum dot optical plate, preparation method thereof and ultrathin backlight module |
| CN115343795A (en) * | 2022-08-25 | 2022-11-15 | 深圳迈塔兰斯科技有限公司 | Diffraction light waveguide and imaging system |
| CN115343795B (en) * | 2022-08-25 | 2024-04-30 | 深圳迈塔兰斯科技有限公司 | Diffraction optical waveguide and imaging system |
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| CN1896839A (en) * | 2005-07-12 | 2007-01-17 | Nec液晶技术株式会社 | Lighting unit and liquid crystal display device using the lighting unit |
| JP2007087647A (en) * | 2005-09-20 | 2007-04-05 | Sharp Corp | Light guide plate, backlight, and liquid crystal display device |
| CN102073092A (en) * | 2011-03-03 | 2011-05-25 | 上海向隆电子科技有限公司 | Light guide plate, illuminating device and method for manufacturing light guide plate |
| US20140002771A1 (en) * | 2012-06-28 | 2014-01-02 | Synergy Optoelectronics (Shenzhen) Co., Ltd. | Light source assembly, backlight module and liquid crystal display device |
| CN103513321A (en) * | 2012-06-28 | 2014-01-15 | 上海天马微电子有限公司 | Light panel, backlight module with light panel used and method for manufacturing light panel |
| CN106199819A (en) * | 2016-09-30 | 2016-12-07 | 京东方科技集团股份有限公司 | A kind of backlight module and display device |
| CN108490684A (en) * | 2018-03-15 | 2018-09-04 | 京东方科技集团股份有限公司 | Backlight module and display device |
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| CN114415422A (en) * | 2022-01-28 | 2022-04-29 | 广东粤港澳大湾区国家纳米科技创新研究院 | High-temperature-resistant quantum dot optical plate, preparation method thereof and ultrathin backlight module |
| CN115343795A (en) * | 2022-08-25 | 2022-11-15 | 深圳迈塔兰斯科技有限公司 | Diffraction light waveguide and imaging system |
| CN115343795B (en) * | 2022-08-25 | 2024-04-30 | 深圳迈塔兰斯科技有限公司 | Diffraction optical waveguide and imaging system |
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